<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
          width: 200px;
          height: 200px;
         background-color: tomato;
         margin: 100px auto;
        }
    </style>
</head>
<body>

      <div></div>
    
</body>
</html>
<script>

let divObj = document.getElementsByTagName('div')[0];






</script>
